Digital/analogue converter
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United States of America Patent
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Feb 18, 1986
Grant Date -
N/A
app pub date -
Mar 25, 1985
filing date -
Mar 28, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A digital-to-analogue converter for use in a digitally-recorded-signal reproducing apparatus comprises a first constant current source, a switch for allowing the constant current of the first constant current source to flow therethrough for a period corresponding to the digital data, a second constant current source generating a current flowing in the direction opposite to that of the current generated by the first constant current source, a switch for allowing the current of the second constant current source to flow therethrough for a predetermined constant period, and an integrator, wherein the sum of the first and second constant currents is integrated by the integrator. The analogue signal outputted by the integrator has a center level in the vicinity of the ground potential level.
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